[Bug 1868228] Re: package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Steve Langasek]

The error in your dpkg log is:

Setting up grub-efi-amd64-signed (1.128.2+2.04-1ubuntu12.2) ...
Installation pour la plate-forme x86_64-efi.
grub-install : attention : Cannot set EFI variable Boot0000.
grub-install : attention : efivarfs_set_variable: writing to fd 7 failed: Argument invalide.
grub-install : attention : _efi_set_variable_mode: ops->set_variable() failed: Argument invalide.
grub-install : erreur : failed to register the EFI boot entry: Argument invalide.
dpkg: error processing package grub-efi-amd64-signed (--configure):
 installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

Unfortunately this indicates there was a problem with grub trying to
talk to your UEFI firmware in order to register Ubuntu as a boot option.

Please attach the output of the command 'sudo efibootmgr -v'.

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https://bugs.launchpad.net/bugs/1868228

Title:
  package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  Don't know... the system just said,  by a banner, there's a bug. sSo,
  I report it, but didn't remark anything.

  ProblemType: Package
  DistroRelease: Ubuntu 19.10
  Package: grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2
  ProcVersionSignature: Ubuntu 5.3.0-42.34-generic 5.3.18
  Uname: Linux 5.3.0-42-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8.6
  Architecture: amd64
  Date: Fri Mar 20 09:40:49 2020
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.7, Python 3.7.5, python3-minimal, 3.7.5-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.17-1
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu2
   apt  1.9.4
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.128.2+2.04-1ubuntu12.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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